STX Rules and Setup Questions

[jbailey8748]

So now that the 17 brz is out, is it legal in the ruled to pull stuff off it and put i a 13.... like the spoiler or the air intake manifold?

Sent from my SM-N930V using Tapatalk

[G_Ride]

Originally Posted by jbailey8748

So now that the 17 brz is out, is it legal in the ruled to pull stuff off it and put i a 13.... like the spoiler or the air intake manifold?

Sent from my SM-N930V using Tapatalk

It's not legal. Backdating/Updating is allowed in Street Prepared and above.

[jbailey8748]

That's too bad

Sent from my SM-N930V using Tapatalk

[Silver Ignition]

Anyone following the Solo Nats times? How the f did a Mini Cooper blow away the field with a 1.2s split to 2nd place??

[e1_griego]

Because he's fast.

And on the power course, he had more power.

[Cueman]

Originally Posted by Silver Ignition

Anyone following the Solo Nats times? How the f did a Mini Cooper blow away the field with a 1.2s split to 2nd place??

I wasn't there... apparently there was a failed protest against him.

"Question/Protest:
Is a Manic version of the JCW tune legal? Direct altering or modifying of boost levels is in violation of 14.10.F.1.

Comments/conclusion:
Per 14.10.F.1, aftermarket tunes are legal provided they are compliant to stock boost parameters. Manic tunes using the same parameters as the JCW tune are legal. The protest committee finds the protest to be well founded, but is disallowed due to the following factors: 1) OEM and aftermarket software can be proprietary and as such neither the protestor or the protestee can supply the required documentation. 2) measuring boost is inaccurate by itself because boost may be altered by other changes. The PC feels that this is an important issue that the SEB needs to address immediately."

Looks like a big can of worms.

Regardless, he really dominated on the east course... which was arguably less friendly to cars with power.

[xwd]

It wasn't less friendly to cars with power. It had a really tight right hander right before a place where you could open it up. He just drove better than everyone else in a well prepped car.

This issue has existed for many years going back to the WRX in STX. It's almost impossible to police and for many years everyone has relied on the honor system that those in ST with boost are running maps not directly altering the boost tables. The only thing that can really be done is to put a rule in where someone has to have the ability to show their boost table is unaltered from the factory tune. If you are running some proprietary tune where you can't see the tables on the ECU as it sits, well you can't run that tune then.

[xwd]

So onto legality questions, what are your thoughts on the JR radiator with the integrated oil cooler?

Radiators and oil coolers are legal, but in the radiator rule there is an item around the installation of the radiator not serving any other purpose. The specific example is providing an air passage for an intake. In this case, the installation itself is not serving any other purpose. The radiator portion meets all of the other requirements.

This is for track use, not really necessary in STX but it would be nice to know if it's legal or not.

[renfield90]

Originally Posted by G_Ride

It's not legal. Backdating/Updating is allowed in Street Prepared and above.

Actually, my understanding is that UD/BD is a unique allowance to SP (and by extension, SM). Prepared has no such allowance; however, at that level most of the stuff you'd actually care to UD/BD is open to modification anyway.

[renfield90]

Originally Posted by xwd

So onto legality questions, what are your thoughts on the JR radiator with the integrated oil cooler?

Radiators and oil coolers are legal, but in the radiator rule there is an item around the installation of the radiator not serving any other purpose. The specific example is providing an air passage for an intake. In this case, the installation itself is not serving any other purpose. The radiator portion meets all of the other requirements.

This is for track use, not really necessary in STX but it would be nice to know if it's legal or not.

You can always write to the SEB for a clarification, but the point of that is to prevent people playing stupid games with radiators. A combined rad/oil cooler seems well within the spirit of the rules.

[cjd]

I think the radiator+oil cooler falls afoul of that rule formally, though with the allowance for oil coolers it's likely within the spirit of allowable modifications.

Have to reread the UD/BD rules.

[justinco]

So, anyone get a 2017 twin yet?

I just test drove a '17 BRZ limited tonight. Car is a lot nicer on the inside compared to my FRS. Wondering if it would be any different in STX trim than the current/older twins...

[Silver Ignition]

I am vehemently against steering wheel controls.

[xwd]

I plan on test driving a 17 but have no plans to purchase a new car.

It's going to be a better STX car than the current model, but I don't think it'll be leaps and bounds better. It will likely end up making more power and the gearing will help on some courses, like the West Nats course. I think the work they have done to the valvetrain/heads since 2013 will allow revving it to 8K reliably.

I wrote a letter on the JR radiator, see what the STAC says.